高超声速流动与换热数值仿真研究

王强; 徐涛; 姚永涛

doi:10.21656/1000-0887.420346

高超声速流动与换热数值仿真研究

doi: 10.21656/1000-0887.420346

王强^1, ,,
徐涛¹,
姚永涛²

1.
中北大学能源动力工程学院，太原 030051
2.
特种环境复合材料技术国家级重点实验室，哈尔滨 150001

详细信息

作者简介:
王强（1982—），男，副教授，博士，硕士生导师（通讯作者. E-mail：qwang@nuc.edu.cn）

中图分类号: V411
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- 文章访问数: 580
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- 被引次数: 0
出版历程
- 收稿日期: 2021-11-15
- 录用日期: 2022-05-11
- 修回日期: 2022-04-13
- 网络出版日期: 2022-09-23
- 刊出日期: 2022-10-31

Numerical Study on Hypersonic Flow and Aerodynamic Heating

WANG Qiang^{1
, ,},
XU Tao¹,
YAO Yongtao²

1.
School of Energy and Powering Engineering, North University of China, Taiyuan 030051, P.R.China
2.
National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin 150001, P.R.China

摘要

摘要:
基于有限差分法开发了高超声速流动与换热问题气热耦合仿真求解器，运用该求解器对三种典型高超声速流动与换热问题开展了仿真研究，得到了相应的气动参数、热流密度分布。高超声速后台阶的存在使表面气动参数、热流分布不再连续；随着缝深的提高，缝隙局部流速迅速降低，对流换热效应减弱；高超声速无限长圆管绕流中，边界层外部区域气动参数随时间变化不大，边界层内存在较大的温度梯度，壁面温度随时间升高。三个算例的仿真结果均与试验测量值进行了对比，验证了所开发的求解器的计算能力。
- 高超声速流动 /
- 气动热 /
- 后台阶 /
- 缝隙 /
- 非定常 /
- 气热耦合
Abstract:
A finite-difference unsteady coupled heat transfer solver was developed. This solver was utilized to simulate the hypersonic flow over a backward-facing step with a transverse gap, and the unsteady thermal conduction in an infinite circular pipe. The backward-facing step leads to local dramatically changing distributions of aerodynamic parameters and wall heat fluxes. The gas flow in the gap decelerates rapidly along with the increase of the gap depth, and there is rather weak convective heat transfer at the bottom of the gap. In the case of hypersonic flow around the infinitely long circular pipe, there exists large temperature gradient in the boundary layer, and the wall temperature increases with time, otherwise the aerodynamic parameters outside the boundary layer change quite slightly. The predicted results are in good agreement with the tested data. The comparison between numerical simulation results and tested data verifies the calculation ability of the developed solver.
- hypersonic flow /
- aerodynamic heating /
- backward-facing step /
- gap flow /
- unsteady /
- coupled heat transfer

HTML全文

图 1 后台阶算例模型尺寸

Figure 1. Geometry of the back-step model

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图 2 高超声速后台阶流动计算网格

Figure 2. The computational mesh for hypersonic flow over backward facing step

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图 3 计算得到的密度等值线图

注　为了解释图中的颜色，读者可以参考本文的电子网页版本，后同。

Figure 3. Predicted density contours

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图 4 壁面压力分布

Figure 4. Distribution of the wall pressure

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图 5 壁面热流分布

Figure 5. Distribution of the wall heat flux

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图 6 缝隙几何参数（单位：mm）

Figure 6. The gap geometry （unit: mm）

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图 7 缝隙流动网格拓扑结构示意图

Figure 7. The mesh topology for the hypersonic gap flow

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图 8 缝隙内流线

Figure 8. Streamlines in the gap

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图 9 缝隙中线流向速度沿缝深变化

Figure 9. The velocity distribution along the gap central line

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图 10 缝隙后壁面热流分布

Figure 10. The heat flux on the rear surface of the gap

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图 11 无限长圆管高超声速绕流计算网格

Figure 11. Computational grids for the unsteady coupled heat transfer simulation of hypersonic flow over infinite-length pipe

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图 12 对称线上温度分布

Figure 12. The temperature distribution along the centerline of the cylinder

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图 13 t=0 s时刻，流固交界面压力分布

Figure 13. The pressure on the fluid-solid interface at t=0 s

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图 14 t=0 s时刻，流固交界面热流密度分布

Figure 14. The heat flux density on the fluid-solid interface at t=0 s

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